
Logseq
Obsidian
Zim Wiki
Nuclino
Trilium Notes
TiddlyWiki
Roam Research
Personal knowledge management and sharing on VSCode & GitHub

Apify
Treg
Sealgate
datawebot
Firecrawl
Portkey
Zapier
Connect your AI agent to the world: web search, X, Reddit, YouTube, on-chain data — through one MCP install for Claude Code, Cursor and Windsurf. Pay-as-you-go.

Which is more popular?
Based on our record, Foam seems to be more popular. It has been mentioned 49 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | foambubble.github.io | agentkey.app |
| Pricing | — | |
| Company | Startup from the United States | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
These panels DESTROYED my STUDIO....REVERB? - ArrowZoom Foam Review
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Foam and AgentKey. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Choose a local Markdown tool like Obsidian, Logseq, Foam, or Tolaria to store all your knowledge as plain .md files you own and control. - Source: dev.to / 6 months ago
I've been using foam instead of obsidian for my personal knowledge base. It works rather well. And it's completely free and ultimately just markdown. While I might wish it was djot, I don't wish hard enough to make that so myself... - Source: Hacker News / about 2 years ago
I gave up on Obsidian and just use Foam (https://foambubble.github.io/foam/) and/or vimwiki. I just can’t get into overwrought, arbitrarily designed organization schemes or proprietary apps (Foam-managed content is just plain Markdown,... - Source: Hacker News / over 2 years ago
Tracking AgentKey since May 2026.
When comparing Foam and AgentKey, you can also consider the following products.

Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
Compare Logseq to Foam or AgentKey:

Apify is a web scraping and automation platform that can turn any website into an API.
Compare Apify to Foam or AgentKey:

A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
Compare Obsidian to Foam or AgentKey:

OpenRouter for tools with 2,600 APIs, 0% markup, pay per call One key for enrichment, SEO, social and ads
Compare Treg to Foam or AgentKey:

Zim is a graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.
Compare Zim Wiki to Foam or AgentKey:

Connect agents to everything and govern how agents interact with your data. Sealgate lets you adopt AI (Claude, ChatGPT, Cursor) and connect it securely to real data, without data leaks.
Compare Sealgate to Foam or AgentKey: